Quote:
Originally Posted by apalrd
Could you possibly add a note that stall torque * free speed is NOT power, even though that's the formula the FRC rules require?
Actual power is torque * speed @ a given operating point. The point of peak power for a brushed DC motor is around 1/2 speed (1/2 torque as well, since the curves are linear), so the actual mechanical power will be 1/4 of the "servo rated power" using the FRC specified formula.
I don't know why FRC specifies the formula they do, it's wrong.
I do like the worksheet, though.
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I realize that I am 3 years late to reply to this, but this is where the rule stands today:
PWM COTS servos with a maximum power rating of 4W each at 6VDC
Per the Servo Industry, Servo Max Power Rating = (Stall Torque) X (No Load Speed)
I don't know what "No Load Speed" means... I have not looked at previous years game manuals yet, but wonder if this issue was ever addressed.